Target that have a touchpad/touchscreen should disable it while
being locked (In order to avoid LCD to drain battery power due to
"key locked" constant reporting messages. If they a have a keylock
button this was already handled at driver level. If not (e.g. fuze+),
they will have to implement a switch at driver level that action.c
can operate on softlock.
This patch does the following for any target having a touchpad
or a touchscreen and no HAS_BUTTON_HOLD (ie any softlock target)
1) it implements the code to call button_enable_touch(bool en) in
action.c.
2) button_enable_touch is implemented in button.c and call
either touchpad_enable or touchscreen_enable
3) those two function are implemented respectively in touchscreen.c
and a new touchpad.c file. They provide a generic way to silents touch's
device and call a function at driver level where target specific code
can be implemented if possible/needed (for power saving for instance).
Those function name are touchpad_enable_device and touchscreen_enable_device
4) we implement an empty function at driver level of targets that need it
to have them still being able to compiled.

Change-Id: I9ead78a25bd33466a8533f5b9f259b395cb5ce49
Reviewed-on: http://gerrit.rockbox.org/569
Reviewed-by: Thomas Martitz <kugel@rockbox.org>
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>

The scrolling code cannot differentiate between the BUTTON_TOUCHSCREEN post
from normal touches and the one posted in the timeout callback.

To fix introduce a global special button (BUTTON_REDRAW) that results
in the desired redraw. This existed already as a local kludge for android
and is now generalized.

Change-Id: I6bfa6c66431c48f5042fcd8fce2ea72cd3457f58

no need to define BUTTON_REMOTE anymore

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31620 a1c6a512-1295-4272-9138-f99709370657

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28421 a1c6a512-1295-4272-9138-f99709370657

Introduce a new .init section for initialisation code, so that it can be copied to an area which is later overwritten before calling. The stack/bss can then overwrite that code, effectively freeing the code size that the initialisation routines need. Gives a few kB ram usage back.
Only implemented for PP and as3525 so far. More targets could be added, as well as more functions.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25013 a1c6a512-1295-4272-9138-f99709370657

- Revert renaming of button_set_flip()
- Moved rtl flipping logic to apps/actions.c as a static function
- Joined rtl_button_flip_needed() and button_flip_horizontally()


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22962 a1c6a512-1295-4272-9138-f99709370657

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22961 a1c6a512-1295-4272-9138-f99709370657

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22933 a1c6a512-1295-4272-9138-f99709370657

%T|x|y|width|height|action| <- setup a region (relative to the current viewport) where if pressed the "action" will be done (currently play/stop/prev/next/menu/browse work, suggestions for others to add and better names welcome)
%Tl<timeout> <- used as a conditional to say if the touchscreen was touched in the last <timeout>, use this to enable/disable button viewports or something... same syntax as other timeout tags

cabbiev2 for the mr500 has been modified to demonstrate the new tags. press the pause/play button to pause playback. press the rockbox logo to get back to the menu. pretty icons needed to make this more usable :)



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20753 a1c6a512-1295-4272-9138-f99709370657

HAVE_SCROLLWHEEL plainly indicates the existence of a scrollwheel, thus all ipods define it now (in addition to the ones and some 
sansas which did before). Same applies to the manual.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20177 a1c6a512-1295-4272-9138-f99709370657